Linked Life Data

10713064

Source:http://linkedlifedata.com/resource/pubmed/id/10713064

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2000-4-12
pubmed:abstractText
Phorbol esters, the activators of protein kinase C (PKC), induce apoptosis in androgen-sensitive LNCaP prostate cancer cells. The role of individual PKC isozymes as mediators of this effect has not been thoroughly examined to date. To study the involvement of the novel isozyme PKCdelta, we used a replication-deficient adenovirus (PKCdeltaAdV), which allowed for a tightly controlled expression of PKCdelta in LNCaP cells. A significant reduction in cell number was observed after infection of LNCaP cells with PKCdeltaAdV. Overexpression of PKCdelta markedly enhanced the apoptotic effect of phorbol 12-myristate 13-acetate in LNCaP cells. PKCdelta-mediated apoptosis was substantially reduced by the pan-caspase inhibitor z-VAD and by Bcl-2 overexpression. Importantly, and contrary to other cell types, PKCdelta-mediated apoptosis does not involve its proteolytic cleavage by caspase-3, suggesting that allosteric activation of PKCdelta is sufficient to trigger apoptosis in LNCaP cells. In addition, phorbol ester-induced apoptosis was blocked by a kinase-deficient mutant of PKCdelta, supporting the concept that PKCdelta plays an important role in the regulation of apoptotic cell death in LNCaP prostate cancer cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
275
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
7574-82
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Involvement of protein kinase C delta (PKCdelta) in phorbol ester-induced apoptosis in LNCaP prostate cancer cells. Lack of proteolytic cleavage of PKCdelta.
pubmed:affiliation
Center for Experimental Therapeutics and Department of Pharmacology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6160, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't